Android Question B4a create new library

I want a coder to write me,a library i can incorporate into my app. A simple piece of code but one i cannot manage to do myself.

Basically i want to access my online sqllite

Read and write records

He isnt familiar with B4A. But is it possible to just instruct him to do java library ?

Or is there something special about b4a libraries i need to explain to him?